This manual covers the Hitachi Hydraulic Excavator Zaxis ZX220W-3. Designed for demanding construction and industrial applications, this model exemplifies Hitachi's commitment to robust engineering and operational efficiency. Its advanced hydraulic system and durable construction ensure reliable performance across a wide range of challenging environments. The Zaxis ZX220W-3 is built to deliver power, precision, and longevity, making it a trusted choice for professionals seeking dependable heavy equipment. The purpose of this comprehensive service manual is to provide detailed information for the maintenance, repair, and technical understanding of the Hitachi Hydraulic Excavator Zaxis ZX220W-3. It includes essential procedures for routine maintenance, in-depth troubleshooting guides, critical technical specifications, and vital safety precautions. This resource is indispensable for owners, service technicians, and mechanics aiming to ensure the optimal performance, longevity, and safe operation of their equipment.